| // From https://github.com/athre0z/disas-bench |
| |
| #include <stdio.h> |
| #include <stdint.h> |
| #include <stdlib.h> |
| #include <time.h> |
| |
| |
| int read_file_data(uint8_t** buf, const char* filename, size_t file_offset, size_t bin_len) |
| { |
| FILE* f = fopen(filename, "rb"); |
| if (!f) return 0; |
| |
| // Seek to code section |
| if (fseek(f, (long)file_offset, SEEK_SET)) |
| { |
| fclose(f); |
| return 0; |
| } |
| |
| uint8_t* code = malloc(bin_len); |
| if (!code) |
| { |
| fclose(f); |
| return 0; |
| } |
| |
| if (fread(code, 1, bin_len, f) != bin_len) |
| { |
| fclose(f); |
| free(code); |
| return 0; |
| } |
| |
| *buf = code; |
| |
| return 1; |
| } |
| |
| int read_file(int argc, char *argv[], uint8_t **buf, size_t *bin_len, size_t *loop_count) |
| { |
| if (argc != 5) |
| { |
| fputs("Expected args: <loop-count> <code-offset> <code-len> <filename>\n", stderr); |
| return 0; |
| } |
| |
| *loop_count = (size_t)strtoull(argv[1], NULL, 0); |
| size_t file_offset = (size_t)strtoull(argv[2], NULL, 0); |
| *bin_len = (size_t)strtoull(argv[3], NULL, 0); |
| const char *filename = argv[4]; |
| |
| if (!read_file_data(buf, filename, file_offset, *bin_len)) |
| { |
| fprintf(stderr, "Couldn't read `%s`\n", filename); |
| return 0; |
| } |
| |
| return 1; |
| } |